Although maybe not THE answer you were hoping for, a possible and simple solution might be to get one of these: http://www.bestglide.com/compact_emergency_signal_panel.html or something similar. Since it has tie-in points already, you could just sew a couple small loops of paracord into place along the shoulder section of a Mountain Serape, and once you get into your deer stand, just tie this panel into it so that you've got the required amount of orange displayed. If you want to have orange visible on both your front and back, maybe just cut the panel into two equal sizes. Hang one on your chest, and one off your back. If they are tied into small paracord loops on the Serape, they'll stay in place pretty well. Heck, you might just be able to chop it in half and then tie the two opposing ends of paracord from each half together to just throw over your head and overtop the Serape while in your stand. If that worked for your desires, that would definitely give plenty of orange on display for safety. At only $3.95 each, you could buy a second one to tie onto your backpack, too.